Citrulline Malate (L-Citrulline DL-Malate)
L-Citrulline DL-malate · C16H32N6O11
Bulk Citrulline Malate powder, the salt of L-citrulline with DL-malic acid. Supplied in 2:1 (72.3% citrulline) and 1:1 ratios at NLT 98.0% assay for pre-workout and endurance formulations.
Specifications
| Chemical name | L-Citrulline DL-malate (salt of L-citrulline with DL-malic acid) |
| CAS number | 54940-97-5 (also cited as 70796-17-7); L-citrulline moiety 372-75-8, DL-malic acid 617-48-1 |
| Molecular formula | 2:1 grade C16H32N6O11 (2 × C6H13N3O3 · C4H6O5); 1:1 grade C10H19N3O8 |
| Molecular weight | 2:1 grade 484.47 g/mol; 1:1 grade 309.27 g/mol |
| Ratio and component content | 2:1 = 72.3% L-citrulline / 27.7% malate (calculated); 1:1 = 56.6% L-citrulline / 43.4% malate |
| Assay (total, dried basis) | NLT 98.0%; citrulline-to-malate ratio confirmed by HPLC on each lot |
| Appearance | White to off-white crystalline or granular powder, faintly acidic odour |
| Solubility | Freely soluble in water giving a mildly acidic solution; practically insoluble in ethanol |
| Loss on drying / Sulphated ash | NMT 1.0% (105 °C) / NMT 0.1% |
| Heavy metals | NMT 10 ppm as Pb; lead, arsenic, cadmium and mercury reported individually on CoA |
| Shelf life | 24 months in unopened original packing, stored below 25 °C, protected from moisture (hygroscopic) |
| HS code | 2924.19 — India ITC-HS 29241900 |
Citrulline Malate is the salt formed between L-citrulline (CAS 372-75-8) and DL-malic acid (CAS 617-48-1, malic acid generally registered as 6915-15-7), most commonly listed under CAS 54940-97-5 and also cited as 70796-17-7. Two stoichiometries are traded and they are not interchangeable. The 2:1 grade, two molecules of citrulline to one of malate, has the formula C16H32N6O11 and a molecular weight of 484.47, giving a calculated 72.3% L-citrulline and 27.7% malate. The 1:1 grade is C10H19N3O8 at molecular weight 309.27, giving 56.6% L-citrulline. Buyers should state the ratio on every enquiry, since label declaration, dosing and effective cost per gram of citrulline all follow from it; unless otherwise agreed, Thovek quotes the 2:1 grade as standard.
The malate counter-ion is not inert filler. Malic acid is an intermediate of the tricarboxylic acid cycle and a well-established food acidulant, and its presence shifts the salt to a mildly acidic, tart solution rather than the near-neutral profile of citrulline base. That behaviour suits pre-workout powders, effervescent tablets and ready-to-drink sports beverages, where the acidity works with the flavour system instead of against it. The salt is more hygroscopic than free citrulline, so blend rooms should be humidity-controlled and part-used bags resealed promptly.
No pharmacopoeial monograph exists for citrulline malate. Thovek supplies it against an FCC-style food and nutraceutical specification with total assay of not less than 98.0% on the dried basis, loss on drying not more than 1.0%, sulphated ash not more than 0.1% and heavy metals not more than 10 ppm as lead. The citrulline-to-malate ratio is verified by HPLC on every lot and stated on the certificate of analysis alongside identity, related amino acids, residual solvents, heavy metals and microbiological limits. Kosher, Halal, non-GMO, allergen-free and BSE/TSE-free declarations are issued with each consignment, and moisture-barrier packing is used as standard for humid destinations.
Applications
Pre-workout powdersEndurance and intra-workoutReady-to-drink sports beveragesEffervescent tabletsAmino acid stick packsCapsules and tabletsEnergy gelsPrivate label sports nutrition
Available grades
Food grade and nutraceutical grade to FCC-style specification, supplied as 2:1 or 1:1 citrulline to malate; no pharmacopoeial monograph exists for this salt
Packaging: 25 kg net in multi-ply kraft paper bags with heavy-gauge food-grade LDPE inner liner, heat-sealed, with desiccant sachets on request; 25 kg HDPE drums offered for humid destinations. Palletised at 500 kg per pallet, shrink-wrapped on ISPM-15 compliant timber. Samples of 100 g to 1 kg available.
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